Laminated materials



Patented Feb. 10, 1942 LAMINATED mums Donald Finlayson, Spun do 5 Derby, England,

asslgnor to Ceianese Corporation oi. America, a corporation of Delaware No Drawing. Application July 18, 1939, Serial No.

285,114. In Great Britain July 23, 1938 2 Claims.

This invention relates to improved laminated materials particularly laminated fabrics suitable eral layers under heat and pressure in the presence of a liquid adapted to render the thermoplastic material adhesive at the pressing temperature. Theinterlining may be a non-thermoplastic fabric, e. g. cotton, doped with the thermoplastic material or may even be a film of said material if permeability to air and moisture is not required but it is of great advantage to employ as an interlining a fabric containing yarns of thermoplastic material, e. g. cellulose acetate particularly in admixture with yarns of nonthermoplastic material, 8. g. cotton, linen or regenerated cellulose. The proportion of thermoplastic yam to non-thermoplastic in such a lining can be varied according tothe permeability or stifiness required in thecollars, cuffs or the like.

When applying the method referred to above to the production of white collars; cufls, fronts or the like it is not always easy to ensure such whiteness of the laminatedarticles that they match the white unstiflened shirting or other material to which they are to be attached or in conjunction with which they are to be used. Thus the:

thermoplastic materials available for such processes, although'they may appear whitev when viewed alone, require slight colour'correction when compared with the whiteness of the facing fabric. Even the use of white pigments in the interlining does not altogether remove this difllcultw.

I have now found that an excellent degree of whiteness in the laminated products, which obviates any difficulty in matching, can be ob tained by first bleaching the interlining materialandthentintingltwithabluedyehavingan one or more blue dyes of the direct cotton class andone or more dispersed insoluble dyes having an afflnity for the cellulose acetate. Preferably, after the colouration the two components should match closely. The use of a mixture of dyes for one of the components or even for both in some cases facilitates matching.

The dyes selected should preferably'be suili-I ciently fast to light and washing, to the assist-' ing liquids used in uniting the fabric layers, and- -to any plasticizers or the like present, at the elevated temperature at which pressing is generally effected as well as at lower temperatures, i

to avoid any appreciable colour change during transport or storage ofthe interlining or dur-' 'ing production or use of the laminated fabrics or fabric articles. As examples of plasticizers which may be present in the interlining or in the assisting liquid, mention may be made of triacetin, formal glycerol, dimethyl tartrate, dibutyl'tartrate, dibutyl phthalate and methyl cellosolve phthalate. The ass'istingiiquid may comprise a 70-80% aqueous solution of methanol 'or ethanol containing a small proportion of one or more of such plasticizers or the water in such a mixture may be replaced by a non-aqueous liquid such as acetone, as-described in British Application No, '9203/38, flled March 25, 1938.

Dyes for the cotton or other 'cellulosic components of the interlining include Chlorazol Blue anthraquinone,

B and 33, Direct Blue 3R, Benzo Blue BX and Chlorantine Fast Blue GLL. For the celluloseacetate component mention may be made of Ceiliton Fast Blue FFG'and of 1.4 di(phenylamino)r 1-4 di(methylamino) anthraquinone, .l-amino-l-methylamino anthraquinone, l-methylamino-4-phenylamino anthraquinone, l-aminoi-phenylamino anthraquinone, l

amino-4-p-tolylamino anthraquino'ne, 1-methyl-- -40 amino-i-p-tolylamino anthraquinone, l-methylamino-4-oxyanthraquinone, l-oxyethyl-amino-4- p-tolylamino anthraquinone, l-oxyethylaminoi-phenyiamino anthraquinone, and 1-amino-4- cyclohexylamino' anthraquinone 2 carboxylicamide.

amnity for the material of the iriterlining. When the interlining contains two materials of different dye'aillnities it is preferable to employ a mixture of dyes. one or more having a substantive aillnity for one of the materials and one or iywhen the lnterlining is woven withparticular more for the other material. Thus, for instance,

inthecaseofaninterlining consisting of cotton in admixture with cellulose acetate the tinting 'may be eilected by means of a bath containing regard to bringing the cellulose ester yarns to the surface as described, for example, in U. S. Patent No. $158,112. v I

In carrying out the process of the invention.

II the interlining fabric is first scoured, thou bleached, e. g. with hypochlorite, washed and treated with an antichlor, e. g. sodium sulphite, The bleached fabric is then tinted in a very dilute bath containing the desired blue dye or dyes.

When two or more dyes are used in tinting these may be applied from the same bath, e. g. a single bath may be used containing a cotton dye such as Chlorantine Fast Blue GLL in admixture with one or more of the blue amino anthraquinone dyes specified above. The winch or .Iig methods may conveniently be used both in the bleaching and in the tinting.

The following examples illustrate the invention:--

Example 1 is then washed and treated with sodium sulphite to neutralise residual chlorine.

The bleached fabric is tinted for about one hour in a warm solution containingi'n 4000 litres 1 gram of Chlorantine Blue GLL and 0.1 gram of 1-methy1amino-4-oxyanthraquinone dispersed with the aid of Turkey Red oil. This volume of solution is used to tint 250 lbs. of fabric; The bleached and tinted fabric is washed and is then ready for finishing.

Example 2 A fabric of the same construction as that referred to in Example 1 is secured, bleached with hypochlorite, treated with sodium sulphite as an antichlor, and tinted, all on the jig.

The tinting bath contains, on the weight of the fabric, 0.017% Celliton Fast Blue FFG, 0.0048'% 01 1-amino-e-phenylamino-anthraquinone dispersed with the aid of Turkey Red oil, and 0.0055% Chlorantine Fast Blue GIL. After washing at about 60 C. the fabric is ready for finishing.

Example 3 'ticular reference to the use of cellulose acetate as the thermoplastic constituent of the interlining. Other suitable thermoplastic materials can be used, however, especially organic derivatives of cellulose, e. g. cellulose 'propionate, butyrate, acetopropionate, acetobutyrate and acetonitrate, and methyl, ethyl, and benzyl celluloses, vinyl esters and others and similar non-thermo-setting synthetic resins, e. g. of the acrylic and methacrylic series. 5

Having described my invention, what I desire to secure by Letters Patent is:

1. Process for the manufacture of white stiffened fabrics and fabric articles, which comprises uniting under heat and pressure a white fabric interlining containing yarns of cotton in admixture with yarnsioffcelluloee acetate to a white facing fabric, said interlining being bleached, and tinted to match the whiteness of the facing fabric with a blue dye having an afllnity for the cellulose acetate, said dye being selected from the class consisting of derivatives of 1:4-diamino-anthraquinone and derivatives of 1:4-amino-oxy-anthraquinone, in admixture with a blue dye'having an aflinity for the cotton material, before union.

2. A white fabric suitable for use as an interlining or backing in the production of stiffened fabrics and fabric articles by uniting under heat and pressure a facing fabric to a fabric interlining or backing fabric'cohtaining a thermoplastic material, said interlinin'g or backing fabric containing filaments, fibers'or yarns of cellulose acetat in admixture with filaments, fibers or yams of cellulose and being bleached, and tinted to whiteness by means of a blue dye having an affinity for the cellulose acetate, said dye being selected from the class consisting of derivatives of 1:4- diamino-anthraquinone and derivatives of 1:4- amino-oxy-anthraquinone, and with a blue cotton dye.

DQNALD FINLAYSON. 

